MOUNT WILSON — A runner fell 180 feet to his death on Mount Wilson when he slipped on a patch of ice, authorities said Monday.

It occurred at 10:50 a.m. Sunday on Mount Wilson, said Sgt. E. Retamoza of the Crescenta Valley sheriff’s station.

The man was with three other runners when he slipped on ice and fell down a ravine, Retamoza said. Two of his companions climbed down to help him, and one ran for help, the sergeant said.

Members of the Altadena, Montrose and Sierra Madre search and rescue teams responded to recover the body because the weather was too poor — with snow and — rain, for a rescue helicopter, Retamoza said.

The man was pronounced dead at the scene. His name was not released pending notification of relatives.